Iowa Code § 123.71: Conditions on injunction proceeding.

A bootlegger injunction proceeding, as provided in this chapter, shall not be maintained unless it is shown to the court that efforts in good faith have been made to discover the base of supplies or place where the defendant charged as a bootlegger conducts an unlawful business or receives or manufactures the alcoholic liquor, wine, or beer, which the defendant is charged with bootlegging.